Siemens SINUMERIK 840DE Programming Manual page 170

Programming Motion Commands
4.19 Stop with thread cutting(LFOF, LFON, LFTXT, LFWP, LFPOS)
POLF[geo axis name | machine axis name]=
Or
POLFMASK(axisname1, axisname2, etc.)
Or
POLFMLIN
Parameters
LFTXT
LFWP
LFPOS
POLF
POLFMASK
POLFMLIN
X, Y, Z
X1, Y1, Z1
Example
Here, the path interpolation of X is suppressed in the event of a stop and a motion executed
to position POLF[X] at maximum speed instead. The motion of the other axes continues to
be determined by the programmed contour or the thread lead and spindle speed.
N10 G0 G90 X200 Z0 S200 M3
N20 G0 G90 X170
N22 POLF[X]=210 LFPOS
N23 POLFMASK(X)
N25 G33 X100 I10 LFON
N30 X135 Z-45 K10
N40 X155 Z-128 K10
N50 X145 Z-168 K10
N55 X210 I10
N60 G0 Z0 LFOF
N70 POLFMASK()
M30
4-64
Retraction direction on lifting from the path tangent,
default
Retraction direction from the active working plane G17,
G18, G19
Retraction direction toward position programmed with POLF
Absolute retraction position of axis, incl. incremental
with IC (value) POLF is modal.
Enable for axes for independent retraction to absolute
position
Enable for axes for retraction to absolute position in
linear relationship. See also functional description Fb3,
M3
Geometry axes in POLF are interpreted as position in the
tool coordinate system (TCS).
Machine axes in POLF are interpreted as position in the
machine coordinate system (MCS).
;Activate (enable)
;rapid lift of
;the axis X
;Block retraction for all axes
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals